Known issue: Office 2007 on Windows Vista prompts for user credentials when opening documents in a SharePoint 2007 site

If you’ve been using Office 2007 on a Vista machine for as long as I have, you may have just gotten used to the extra credential prompts when you open Office documents from SharePoint 2007. Well, Microsoft considers this a "known issue", but it’s not clear when it may be resolved for good, though it may be in Vista SP1.

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